Brick for regenerative furnaces



(No Model.)

S. A. RICHARDS.

BRICK FOR REGENERATIVE FURNACES r No. 808,577. Patented Nov. 25. 1884.

Mil /168668 biz/622602 2 I i; W

UN TED STATES SAMUEL A. RICHARDS,

PATENT OFFICE.

OF JOLIET, ILLINOIS.

BRICK FOR REGENERATIVE FURNACES.

SPECIFICATION forming part of Letters Patent'No. 308,577, dated November 25,1884.

Application filed April 24, 1884. (No model.)

To aZZwhom it may concern.-

Be it known that I, S. A. RICHARDS, acitizen of the United States, residing at J oliet, in the county of Will and State of Illinois, have invented certain new and useful Improvements in Brick forRegenerative Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to that style of bricks for regenerative furnaces which are constructed with tongues and grooves, in order that all the bricks of each course of the furnace may be firmly interlocked to prevent lateral displacement of individual bricks and insure the maintenance of the smooth continuity of the flues.

My improvement consists of a brick the sides of which are constructed with projecting vertical ribs, whereby grooves are formed with out weakening the body of the brick, (which is, on the contrary,'rather stiffened by these ribs,) so that it can be made as thin as may be necessary or desirable.

. It further consists of a concavely-rounding connection or filling between the exterior side of these ribs and the body of the brick, in order that the fines of a furnace built of these bricks may have rounding corners, which are more desirable than sharp angles, because,

being more favorable to a scouring action of view of a part of a course of my brick. Fig. 3 is a section of a part of three courses of my bricks.

The same letters of reference indicate iden-- tical parts in all the figures.

The body A of my brick is of substantially uniform thickness throughout. The top and bottom are smooth, but each side A is provided with two projecting vertical ribs, a a, equidistant from the center of the brick, which ribs form a vertical groove, a, on the side of the brick, preferably of the illustrated wavelike contour in cross-section. Atongue, b, is formed on each end of the brick, shaped to fit in the groove a. The form of the tongues and grooves may be considerably varied, as is obvious. The exterior side of each rib a is connected to the body of the brick by a concave filling, a.

Bricks formed as described are laid in the manner clearly shown in Fig. 2, all the bricks of each course being interlocked by the vertical tongues and grooves. The flues B have rounding corners. The bricks of one course should break joints with the bricks of the next course.

I claim as my inventionn 1. A brick having a tongue at each end and a corresponding groove across each side, the

grooves being formed by projecting ribs, sub- SAMUEL A. RICHARDS.

Vitnesses:

A. L. RATHMAN, F. H. TREAT. 

